[Users] BenchIO_HDF5 questions
Avi Purkayastha
avi at sicortex.com
Fri Apr 18 08:12:16 CDT 2008
Hello,
I have been testing the BenchIO_HDF5 benchmark and a number of issues
came up:
1) I was testing on a 10 GB filesystem and seem to run out of space
on runs with varying proc counts. The benchmark page lists that each
proc contributes 352 MB to the overall data checkpoint, so does that
mean that the total required disk space is N*352 MB, where N is the
number of procs?
2) Is there an order of preference based on importance, for these
three tests -- onefile, eachproc, and 8proc from the Cactus user
community, or all of equal importance?
3) Is there any data from these I/O tests listed anywhere from
different architecture systems with fast disks and/or filesystems, so
one can get a sense of what is considered good, bad or ugly IO rates?
Thanks
-- Avi
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